As for the price range of VR, it is a bit steep but then again, it is new and will most likely go down in price over time. As for my personal favorite VR system, the HTC Vive is a good one simply for the ability to move around and interact with the area more efficiently then with an Oculus Rift.\
It's highly dependent whether rpgmaker titles will make it into VR, as we are still at the time of 2-dimensional sprites and models rather than 3-d. If the developers for rpgmaker are able to make it 3-D compatible, then it should be possible for it to go into VR.
As for games... Resident evil 7 is pretty darn good on VR, VR Chat is also a really good chatroom for VR. Granted, I don't know a ton about VR titles so these ones are the only ones I know are good on the VR.